HJ 48966 NUMBER [PATHNET LOGO] SHARES PATHNET, INC. P COMMON STOCK INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE SEE REVERSE FOR CERTAIN DEFINITIONS CUSIP 70321G 20 8 THIS CERTIFIES THAT is the owner of FULLY PAID AND NON-ASSESSABLE SHARES OF COMMON STOCK, PAR VALUE OF $.01 PER SHARE OF PATHNET, INC transferable on the books of the Corporation by the holder hereof in person or by duly authorized attorney upon surrender of this certificate properly endorsed or assigned. This certificate and the shares represented hereby are issued and shall be subject to the laws of the State of Delaware and the Certificate of Incorporation and Bylaws of the Corporation as now or hereafter amended, to all of which the holder of this certificate by acceptance hereof assents. This certificate is not valid unless countersigned and registered by the Transfer Agent and Registrar. WITNESS the facsimile seal of the Corporation and the facsimile signatures of its duly authorized officers. Dated: /s/Michael A. Lubin /s/David Schaeffer ------------------- --------------------------------- SECRETARY CHAIRMAN OF THE BOARD OF DIRECTORS [PATHNET SEAL] PATHNET, INC. THE CORPORATION WILL FURNISH WITHOUT CHARGE TO EACH STOCKHOLDER WHO SO REQUESTS A STATEMENT OF THE POWERS, DESIGNATIONS, PREFERENCES AND RELATIVE, PARTICIPATING, OPTIONAL OR OTHER SPECIAL RIGHTS OF EACH CLASS OF STOCK OR SERIES THEREOF OF THE CORPORATION AND THE QUALIFICATIONS, LIMITATIONS OR RESTRICTIONS OF SUCH PREFERENCES AND/OR RIGHTS. SUCH REQUEST MAY BE MADE TO THE CORPORATION OR THE TRANSFER AGENT. KEEP THIS CERTIFICATE IN A SAFE PLACE. IF IT IS LOST, STOLEN OR DESTROYED, THE CORPORATION MAY REQUIRE A BOND OF INDEMNITY AS A CONDITION TO THE ISSUANCE OF A REPLACEMENT CERTIFICATE. The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM -- as tenants in common UNIF GIFT MIN ACT - -------Custodian----- (Cust) (Minor) TEN ENT -- as tenants by the entireties under Uniform Gifts to Minors JT TEN -- as joint tenants with right of Act survivorship and not as tenants ------------------------- in common (State) Additional abbreviations may also be used though not in the above list For value received, ----------------- hereby sell, assign and transfer unto PLEASE INSERT SOCIAL OR OTHER IDENTIFICATION NUMBER OR ASSIGNEE --------------------------------- - ------------------------------------------------------------------------------- (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS INCLUDING ZIP CODE, OF ASSIGNEE) - ------------------------------------------------------------------------------- - ------------------------------------------------------------------------------- - -------------------------------------------------------------------------shares of the capital stock represented by the within Certificate, and do hereby irrevocably constitute and appoint - ------------------------------------------------------------------------Attorney to transfer the said stock on the books of the within named Corporation with full power of substitution in the premises. Dated------------------------------- NOTICE------------------------------------------------ THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER SIGNATURE(S) GUARANTEED:---------------------------------------------- THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM) PURSUANT TO S.E.C. RULE 17Ad-15.